Finding the Fourth Proportional to 118,981.72, 164,191.92 and 65,266.24

Step by Step Solution

1. Step 1: Write the proportion equation
   118,981.72 : 164,191.92 = 65,266.24 : x
2. Step 2: Convert to fraction form
   118,981.72/164,191.92 = 65,266.24/x
3. Step 3: Cross multiply
   118,981.72x = 164,191.92 × 65,266.24
4. Step 4: Simplify right side
   118,981.72x = 10,716,189,256.78
5. Step 5: Solve for x
   x = 10,716,189,256.78/118,981.72
6. Step 6: Final answer
   x = 90,065.85